Cheapest return flights from Seoul to Chiang Mai in December from $499

AirHint found the following cheapest return flights from Seoul (GMP) to Chiang Mai (CNX) in December 2026 (see full year).

Return flights

05 Dec - 13 Dec Air China
12 Dec - 26 Dec Air China
15 Dec - 18 Dec Air China
04 Dec - 08 Dec Air China
23 Dec - 27 Dec Air China
04 Dec - 14 Dec Air China
17 Dec - 23 Dec Air China
10 Dec - 14 Dec Air China
10 Dec - 13 Dec Air China
14 Dec - 28 Jan Air China
16 Dec - 20 Jan Air China
25 Dec - 30 Dec Air China
25 Dec - 02 Jan Air China
30 Dec - 06 Jan Air China
01 Dec - 01 Jan Air China
17 Dec - 20 Jan Air China

Also check the deals for one-way flights from Seoul to Chiang Mai in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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